The saproxylic beetles in the families Mycteridae, Boridae, Pythidae, Pyrochroidae, and Salpingidae of the Maritime Provinces of Canada are surveyed and new provincial records are reported. Boros unicolor Say is newly recorded in New Brunswick, Nova Scotia, and Atlantic Canada as a whole; Pytho niger Kirby and Rhinosimus viridiaeneus Randall are newly recorded in New Brunswick; Neopyrochroa femoralis (LeConte) is newly recorded in Nova Scotia; and Priognathus monilicornis (Randall), Pedilus lugubris (Say), Dendroides canadensis Latreille, and Dendroides concolor (Newman) are all newly recorded in Prince Edward Island. The distribution and bionomics of all 15 species known from the region are briefly summarized. The composition of the region’s fauna is discussed, particularly in the context of saproxylic beetles and the effects of forest management practices on this group of insects.